
go ahead... be a heretic
	PerlMonks

Re: Name "main::a" used only once: possible typo (limitations of "sort" like functions)

by LanX (Saint)

on Mar 05, 2013 at 21:57 UTC ( [id://1021906]=note: print w/replies, xml )

Need Help??

Help for this page

Select Code to Download

Select or download this

use List::Util qw/reduce/;
# my ($a,$b)=(0,0);
print reduce { $b+=$a } 1..10;

Select or download this

use warnings;
use strict;
...

use Data::Dump;
dd \@x;

Select or download this

my ($a,$b)=(0,0);
print sort { $b cmp $a } 1..10;

Select or download this

Can't use "my $b" in sort comparison at ... line 2.

Select or download this

use warnings;
use strict;
...
package Tst;

print sort { $b cmp $a } 1..10;

Select or download this

Use of uninitialized value $b in string comparison (cmp) at /home/lanx
+/B/PL/PM/ScopeListUtils.pl line 9.
Use of uninitialized value $a in string comparison (cmp) at /home/lanx
+/B/PL/PM/ScopeListUtils.pl line 9.
Use of uninitialized value $b in string comparison (cmp) at /home/lanx
+/B/PL/PM/ScopeListUtils.pl line 9.
Use of uninitialized value $a in string comparison (cmp) at /home/lanx
+/B/PL/PM/ScopeListUtils.pl line 9.
...

Domain Nodelet^?

www.com | www.net | www.org

Node Status^?

node history
Node Type: note [id://1021906]
help

Chatterbox^?

How do I use this? • Last hour • Other CB clients

Other Users^?

Others cooling their heels in the Monastery: (3)

As of 2024-09-13 12:04 GMT

Sections^?

Information^?

Find Nodes^?

Leftovers^?

Voting Booth^?

The PerlMonks site front end has:

Results (19 votes). Check out past polls.

Notices^?

	• erzuuli	‥ 🛈The London Perl and Raku Workshop takes place on 26th Oct 2024. If your company depends on Perl, please consider sponsoring and/or attending.